FFT-accelerated determinant quantum Monte Carlo reaches larger kagome lattices, yielding superfluid critical exponents at Dirac filling and evidence that the proposed triangle-rule CDW is a finite-size effect.
(A1) K is Fourier transformed into the diagonal matrix Λ{1×1} tri : K =(F ⊗ F )[I ⊗ Λs + Λs ⊗ I + Λs ⊗ Λs + h.c.] ( F † ⊗ F †) =(F ⊗ F )Λ{1×1} tri ( F † ⊗ F †)
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Accelerated quantum Monte Carlo simulations of the attractive Hubbard model on the kagome lattice
FFT-accelerated determinant quantum Monte Carlo reaches larger kagome lattices, yielding superfluid critical exponents at Dirac filling and evidence that the proposed triangle-rule CDW is a finite-size effect.